Take-up mechanism for looms



Aug. 25, -l93 1. E. w. STONE TAKE-UP MECHANISM FOR LOOMS Filed Sept. 11,1930 2 Sheets-Sheet l //v I/ENTO R WW A T-TO'RNEY Aug. 25, 1931. E, w,STONE 1,820,846

TAKE-UP MECHANISM FOR LOOMS Filed Sept. 11, 1930 2 Sheets-Sheet 2 ATTRNEY Patented Aug. 25, 1931 Us starts SANFORD CARPET CO., INC., OFTHOMPSONVILLE, CONNECTICUT, A CORPORATION or MASSACHUSETTS TAKE-UPMECHANISM FOR LOOMS Application fi led September 11, 1930. Serial No.481,121.

This invention rel-ates to novel mechanism for rotating the spike ortake-up roll of a loom either by manually operated means or from a goingpart of the loom, and to simple means for placing the take-up roll underthe control of either form of driving mechanism.

It is now the ordinary practice to provide looms with take-up mechanismfor driving the spike or take-up roll from a going part of the loom sothat the fabric will be drawn forward at the proper speed as woven, andit is desirable to so construct the take-up mechanism that the take-uproll may be readily turned back when a mis-pick or other defect occursin the fabric.

An important feature of the present invention therefore resides inimprovised mechanism whereby the spike .or take-up roll is normallydriven from a going part of the loom but may be easily releasedtherefrom for manual rotation, and then readily placed again under thecontrol of the power operating mechanism with the proper tension on thefabric.

Since the take-up mechanism is relied upon to a large degree to controlthe placing of the proper number of picks in the fabric per inch, it isimportant that care be taken each time the take-up roll is released fromthe power driving mechanism, tosee that the proper tension is placedupon the fabric when the take-up roll is again placed under the controlof the power drive.

It is therefore important that the manually shiftable means for placingthe takeup roll under the control of either the power driving mechanismor the manually operable means, be so constructed that the parts can bereadily engaged to automatically operate the take-up roll after thelatter has been turned to a position to place the desired tension uponthe fabric.

This is accomplished in accordance with the present invention byproviding the power driving connections for the take-up rollwith-cooperating gear means that are so constructed that the teeth ofthe cooperating parts may be readily moved into and out of lockingengagement with each other irre- "rrrc spectiveof the angular rotationof one relative to the other. More specifically, an important feature ofthe present invention resides in clutch means between the power driveand take-up roll comprising an internal gear having associated therewitha gear, the teeth of which are adapted to be moved into and out oflocking engagement with the teeth of the internal gear.

Other features of the invention and novel: combination of parts, inaddition to the above, will be hereinafter described in connection withthe accompanying drawings which illustrate one good practical form ofthe invention.

In the drawings Fig. l is a front elevation of the lefthand side of aloom provided with the takeup mechanism of the present invention;

Fig. 2 is a sectional view taken on the}, line 22 of Fig. l; and

Fig. 3 is a sectional View through looking gears to be described.

WVhile the take-up mechanism of the present invention may be employedupon va-1., rious. types of looms, it is designed more particularly foruse upon-looms weaving a relatively heavy fabric such as carpets or thelike where a strong tension is maintained upon the warp threads, makingit neces-'- sary to impart a strong rotative force'to the spike ortake-up roll. The features of the present invention have, therefore,been illustrated in connection with a loom designed more particularlyfor weaving a pile fabric such as carpet, and the fabric shown In theccnstruction shown the loom parts;,

are supported by the usual side frames 1, which are secured in spacedrelation to each other by the longitudinally extending beam 2. Theseside frames, only one-of which is illustrated in the drawings, may haveany preferred construction to support the operating parts of the loom tobe described.

The loom shown is provided with the usual lay 3, which is supported bythe lay swords 4 and rocking shaft 5 for rocking movement towards andfrom the front of the loom in a well known manner under the action ofthe pitman arms (5. he lay 3 is shown as provided with the reed 7 of theusual construction, which is supported at its upper end by the reed cap8 carried by the upper portion of the lay swords, and the shuttlebox 9is provided with a binder 10 having associated therewith the binderfinger 11 and dagger 12, as usual.

At each end of the lay is provided a picker stick 13 of the usual or anypreferred construction and the means shown for operating a picker stickcomprises a picker shaft 14 which is journaled near its lower end in thesupporting bracket 15 and to the shaft 14 is secured the curved pickershoe 16, the outer end of which is operatively connected to the pickerstick by the strap 17.

In the construction shown the fabric F produced from the warp strands Wis advanced from the lay over the breast beam 18 and around the spikeroll or take-up roll 19, which is rotatably supported at its oppositeends by the bearings 21) carried by the side frames 1, and thesebearings are so positioned that the upper surface of the roll lies inthe horizontal plane of the upper face of the breast beam. The fabric Fpasses around the spike or take-up roll '19, as shown, and thendownwardly to the cloth roll 21, which is provided at its opposite endswith the stub shafts 22 journaled in the bearing brac rets 23 having theremovable cover plates shown.

The mechanism so far described forms no essential part of the presentinvention, but has been illustrated and briefly described to make clearthe construction and operation of the take-up mechanism of the presentinvention now to be described.

In the embodiment of the invention shown the central shaft 24 of thespike or takeup roll 19 is provided at its left hand end in Fig. 1 witha worm wheel 25 adapted to be driven by the worm 26. This worm isrotatably mounted on a shaft 27, and the worm and shaft are rotatablysupported by the bearing bracket or casing 28, which preferablyconstitutes a housing for the worm 26 and the worm wheel25, as shown.

The shaft 27 in the construction shown has positively secured to itsinner end a driving gear 29 adapted to be driven by the change gear 30removably secured to the change gear shaft 31, and this change gear isrotatably supported in the bearing bracket 32 which is adjustablysecured to the frame 1 by the bolts 33.

The arrangement is such that the speed at which the spike or take-uproll 19 is driven from a rotating portion of the loom, to be described,may be varied as desired by varying the size of the change gear 30 whichis keyed to the shaft 31 and retained in place thereupon by any suitablemeans such as the removable screw 34 and washer 35.

In the construction shown the change gear shaft 31 is driven by thedrive shaft 36 provided at its opposite ends with the universaljoints37, and the shaft 36 is provided at one end with the slidingsleeve connection. 38. The shaft 36 is conveniently driven from thebottom shaft 39 provided with the worm 40 adapted to drive the Wormwheel 41, connected to the drive shaft 36.

As hereinbefore stated, it is important to provide means whereby thespike or take-up roll may be rotated manually as well as automaticallyand the mechanism for conveniently placing this ro'll under the control.of either power or manuall operated means will now be described.

in the embodin'ient of the invention shown the worm 26 is provided atits opposite ends with reduced tubular portions that are journaled inthe supporting bracket 28 and the tubular portion at the outer end ofthe worm 26 is provided with an outwardly extending annular flange 42.To this flange 42 is rigidly secured a ring gear 43 which is providedwith external and internal teeth. The driving worm shaft 27 is providedwith a projecting end portion having keyed thereto for sliding movementthe sliding gear 44.

The hub of this gear is provided with the nob 45 adapted to be engagedwith the fingers to shif the gear 44 longitudinally of the shaft 27 tomove its teeth into and out of locking engagement with the ring gear 43.

It will be seen from the construction of the take-up mechanism so fardescribed that the driving shaft 27 is continuously driven during theoperation of the loom from the bottom shaft 39 through the drivingconnections above described and it, therefore, follows that if thesliding gear 44 is moved into locking engagement with the teeth of thering gear 43, as shown in Fig. 2, the worm 26 will be positively drivenfrom the shaft 27 to rotate the spike or take-up roll.

If, however, the nob 45 of the sliding gear.

44 is engaged by the fingers and this gear moved outwardly upon theshaft 27 sufficiently to disengage its teeth from the teeth of the ringgear 43, the take-up roll 19 will be released from the power drivenshaft 27. and may be manually rotated independently thereof.

The manual rotation of the spike or takeup roll 19 is secured in theembodiment of the invention illustrated by providing the hand actuatedpinion 46 which is connected to a I "stub shaft 47 so that its teethmesh, continu- "end with a squared portion 48 adapted to receive a crankhandle or the like '(not shown) for manually rotating the gears 46 and43 to thereby rotate the worm '26 and spike or take-up roll 19.

- It is important to note that since the sliding gear 44 and ring gear43 constitutes the manually shiftable driving connections between theshaft 27 and worm 26, the manually operable stub shaft 47 is at alltimes positively connected to the take-up roll for manual operation ofthe latter as soon as the sliding gear 44 is moved out of engagementwith the ring gear 43, and since these two gears are provided with anumber of cooperating teeth the teeth may be moved into lockingengagement with each other when one has been rotated relative to theother through one or more small increments of a complete revolution, tothereby facilitate the placing of the take-up roll 19 under the controlof the driving shaft 27 as soon as the take-up roll has been rotated byhand sufficiently to place the desired tension upon the fabric F.

As above stated, the fabric F passes clownwardly from the spike ortake-up roll 19 to the cloth roll 21 and the roll 21 is rotated in theconstruction shown by the ratchet Wheel 49 and cooperating dog 50. Thisdog is mounted upon the cloth roll operating lever 51, which lever ispivotally mounted upon the frame 1 at 52. The lever 51 is shown ashaving a forked rear end portion 53 which is adapted to cooperate withthe stud 54 projecting laterally from the lay sword 4. The arrangementis such that a spring 55 connected to the lever 51 tends to pull thesame downwardly in a direction to cause the pawl to rotate the ratchetwheel 49 in the direction indicated by the arrow in' Fig. 2. Each timethe lay beats up the stud 54 will engage the upper curved prong 53 tolift the same, if the tension of the spring has been suflicient to pullthe lever 51 down in the cloth roll rotating direction. The means justdescribed for rotating the cloth roll 21 constitutes a simpleconstruction controlled by the tension of the fabric for automaticallyrotating the cloth roll 21 at the proper speed, and the cloth roll isprevented from rotating in the cloth unwinding direction by the fixeddog 56.

The worm wheel 25, worm 26 and gears at the opposite ends of the shaft27 are preferably enclosed in the housing 28 having the upper removableportion 47 but the opening in this casing about the shaft 27 issufficiently large to permit the sliding gear 44 to be readily shiftedinto and out of locking engagement with the ring gear 43. The slidingmovement imparted to the gear 44 is What is claimed is preferablylimited by the screw 58 projecting from the hub of this gear into alimit slot 59 formed in the shaft 27.

It is desirable to provide means for frictionally holding the slidinggear 44 in the position" to which it is manually adjusted,

and this is readily accomplished by providing the shaft 27 with thespring actuated ball 60 adapted to enter either one of the notches 61 inthe hub of the gear 44.

1. In a take-up mechanism for looms, the

combination of a take-up roll, a worm and worm 'gear for rotating saidroll, a power tate the roll from a going part of the loom,

operated shaft for driving the worm to r0 said external teeth to rotatethe ring gearand worm, and adjustable means movable into engagement withsaid internal teeth to drive the ring gear and worm from said shaft andmovable out of engagement with the internal teeth to release the ringgear and Worm from the shaft.

2. In a take-up mechanism for looms, the combination of a take-up roll,a worm and worm gear for rotating said roll, a power operated shaft fordriving the worm to rotate the roll from a going part of the loom, aring gear connected to said worm and provided with internal and externalteeth, manually operable means engageable with said external teeth torotate the ring gear and worm, and a gear slidably secured to said shaftand adapted to be moved into engagement with said internal teeth to lockthe shaft and'worm together and movable out of engagement with theinternal teethto release the ring gear and worm from the shaft. 2

3. In a take-up mechanism for looms, the combination of a take-up roll,a worm and worm gear for rotating said roll, a power operated shaft fordriving the worm to rotate the roll from a going part of the loom,

a ring gear secured to said worm and provided with internal and externalteeth, a gear slidably mounted upon said shaft and movable intoengagement with said internal teeth to drive the worm from said shaftand movable out of engagement with said teeth to release the ring gearfrom said shaft, means for manually rotating said ring gear to turn theroll, and a casing enclosing the worm, worm gear and sliding gear.

4'. In a take-up mechanism for looms, the combination of a take-up roll,gear mecha nism for rotating said roll, a power operated shaft fordriving said gear mechanism to rotate the roll from a going part of theloom, manually operable means for rotating said gear mechanismindependently of said power shaft, and clutch means for placing thetake-up roll under the control of either said shaft or said manuallyoperable means, including anv internal gear and an external gear adaptedto be shifted into and out of .small increments of a complete circle. 7

5. In a take-up mechanism for looms, the combination of a take-up rollhaving a worm gear, a shaft having a worm loosely mounted thereon andengaged with the worm gear, power means for driving said shaft, a ringgear secured to the worm and having internal and external teeth, a gearsplined to said shaft and movable longitudinally thereof into and out ofengagement with the internal teeth of the ring rear, and a manuallyoperable gear continuously engaged with the external teeth of the ringgear for turning the take-up roll manually when the gear splined to thesaid shaft is disengaged from the internal teeth of the ring gear.

6. In a take-up mechanism for looms, the combination of a take-up rollhaving a worm gear, a worm supporting shaft having a worm looselymounted thereon and provided With a ring gear secured thereto, a gearsecured on the worm supporting shaft for rotative movement therewith andlongitudinal movement thereon into and out of engagement with the ringgear, a manually operable gear in continuous engagement with the ringgear for turning the latter manually when the ring gear is disengagedfrom driving connection with the worm supporting shaft.

7. In a tal e-up mechanism for looms, the combination of a take-up rollhaving a worm gear, a worm supporting shaft having a worm looselymounted thereon, a power transmitting gear secured to one end of theworm supporting shaft, a power shaft having a change gear engaged withthe power transmitting gear, a gear secured to the worm and having tWosets of teeth, a gear splined to the worm supporting shaft and movablelongitudinally thereof into engagement with one of said sets of teeth tooperate the take-up roll by power and at a speed dependent upon thechange gear, a manually operable gear in continuous engagement with theother set of teeth of the gear secured to the worm that the take-up rollmay be manually turned at a uniform speed when the splined gear is movedlongitudinally of the worm supporting shaft out of engagement with theworm gear.

8. In a take-up mechanism for looms, the combination of a take-up roll,a worm supporting shaft, a worm and worm gear for rotating the take-uproll, a power shaftfor rotating the worm, a gear having two sets ofteeth and secured to the worm, a

tion of the take-up roll and movable longitudinally of the Wormsupporting shaft in the opposite direction to free the worm to actuationby the manually operable gear.

name to this specification.

EDWIN W. STONE.

'70 the other set of teeth to cause power opera- In testimony whereof, Ihave slgned my

